sampling size 第1页

Study on the Application of A New Sampling Technique for Estimating the Arithmetic Mean Height of Stand Pattern and Dynamics of the Spatial Population Distribution of Endangered Abies chensiensis Spatial heterogeneity of fine roots and appropriate sampling methods in a subtropical Chinese fir plantation Woody plants species-area relationships in a broad-leaved Korean pine forest in the Xiaoxing‘an Mountains Spatial heterogeneity of fine roots in a subtropical evergreen broad-leaved forest and their sampling strategy based on soil coring method Spatial variability of soil nutrients in paddy field and their appropriate sampling sizes The optimum sampling unit area on the spatial distribution pattern of grassland on the saline land in Linze